SDF, or sodium diamine fluoride is a liquid antimicrobial that is applied at the dental office to stop the progression of small cavities. It is a conservative approach to managing dental decay. When applied to a cavity, it can remineralize, or strengthen the cavitated tooth structure. The procedure only takes a few minutes. It’s quick, and doesn’t require any anesthetic.

Frequently Asked Questions

What situations may SDF be recommended For?

Although we usually manage cavities by removing the decay, and placing fillings, it’s not always possible. These are some situations that may benefit from the use of SDF:

for patients with many cavities that can’t be restored right away
when there are behavioural, physical, or medical challenges that may prevent getting other dental procedures done
when there are barriers to accessing dental care
for cavities that are difficult to treat

Can SDF be applied to all cavities?

SDF is used to control early cavities. SDF is not used for very deep cavities that are close to the innermost layer of the tooth (also known as the pulp), or if the tooth is painful. We also avoid using it where esthetics is a concern.

Are there any side effects?

The main side effect is that SDF leaves a brown or black stain when it is applied to dental decay. However, it doesn’t stain healthy, sound enamel.

SDF should not be used on patients with silver allergies, or certain gum and soft tissue conditions.

Is SDF the same as THE fluoride that is Typically applied at the end of cleaning appointments?

No, SDF is different from the topical fluoride treatment you routinely get at dental cleaning appointments. The type of fluoride used at hygiene appointments is mainly aimed at preventing future cavities, not arresting existing ones. That type of fluoride does not leave a stain.

Still have questions? Contact Vivant Dental in Surrey today.

Here are the detailed instructions for making a fabric mask with a filter pocket! Following these steps, we were able to create more than 100 fabric masks for our community during the COVID-19 closure. Why did we make these? It is believed that a fabric mask may play a role reducing the spread of the virus in the community. We wanted to do our part in helping to “flatten the curve”.

Please note that fabric masks are not equivalent to surgical or N-95 masks, and they are not a substitute for social distancing or proper hand hygiene. We strongly encourage you to follow the Government of Canada’s recommendations on the proper use of any fabric mask.

Tools you'll need

scissors
ruler
sewing machine (needle and thread)
clips
iron & ironing board
fabric marker pen

Fabric mask components

Four 18” x 1 ½” strips
Front piece (100% cotton; 9” x 7 ½”)
Back piece (100% cotton; 9” x 6 ½”)

We’re making a mask that’s white at the front.

Some General Tips First!

Always backstitch.

Choose different fabric patterns for the front and back of the mask to easily tell them apart.

To make your own ties from fabric:

You’ll need 4 pieces of fabric like this (~18” x 1 ½”)

Fold ¼” on one side and iron flat to create a finished end (that won’t fray).

Fold both long sides towards the centre, and iron flat.

Fold in half to encase the raw edges. Iron flat.

Once ironed, it should look like this.

Sew a straight line down the entire length of the strip (~1/8” from the edge). You’ve completed one tie! You’ll need four of these.

Assemble the fabric components

Line up one long edge of the two pieces of fabric.

IMPORTANT: The patterned sides of the fabric should be facing each other.

Sew two 3” lines about ¼” away from the lined-up edge. Leave a 3” gap between the lines.

Optional: Iron open the seam and sew straight down the middle of each of the two flaps. This increases durability!

It should look like this on the patterned side.

Line up and clip the other long edge with the patterned sides of the fabric facing together.

Sew a line ¼” away from this edge all the way across.

Knot each tie on itself to shorten it.

Line up and clip the unfinished end of the tie to each of the four corners on the inside. Position the ties so that they are not visible from the outside.

For illustrative purposes only, the ties in the photo are placed on top of the fabric so you can see how they should be aligned at the corners.

Do NOT place your ties above the fabric. They need to be inside, as shown before.

It should look like this.

Sew two lines that are ½” away from the open edges. Tip: If you are using a machine, sew slowly, and manually turn the wheel due to the added thickness of the ties.

Flip the package inside out through the 3” gap between the two 3” long stitch lines.

Pull on the straps to straighten the mask.

Tip: Iron the mask to make the edges sharper and easier to pleat.

Position the mask with the filter opening visible. Fold and clip three ~9/16” pleats, with the pleats pointing up. Total height of the mask after pleating: ~ 2½”.

Sew two lines, each ¼” away from the short edge. If your machine is encountering resistance, try going slowly and manually turning the wheel.

Voila! This is the back of the completed mask.

This is the front of the mask.